Most efficient way to get default constructor of a Type

Question

What is the most efficient way to get the default constructor (i.e. instance constructor with no parameters) of a System.Type?

I was thinking something along the lines o

Answer 1

If you only want to get the default constructor to instantiate the class, and are getting the type as a generic type parameter to a function, you can do the following:

T NewItUp() where T : new()
{
   return new T();
}